#include <stdio.h>
#include<string.h>
#include <windows.h> 
 int main()
 {
 char arr1[] = "hello,guoxuetao..";
 char arr2[] = "#################";
 int left = 0;
 int right = strlen(arr1)-1;
 printf("%s\n", arr2);
 while(left<=right)
 {
 Sleep(1000);
 arr2[left] = arr1[left];
 arr2[right] = arr1[right];
 left++;
 right--;
 printf("%s\n", arr2);
 }
 return 0;
 }
